Iwaya is a surname. Notable people with the surname include:

  • Mihoko Iwaya (岩屋 美保子, born 1964), Japanese footballer
  • Naomine Iwaya (岩谷 高峰, born 1960), Japanese alpine skier
  • Shogo Iwaya (岩谷 翔吾, born 1997), Japanese dancer and actor
  • Takeshi Iwaya (岩屋 毅, born 1957), Japanese politician
  • Toru Iwaya (岩谷 徹, born 1936), Japanese mezzotint engraver and painter

See also

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